Preparation of Sr2CeZrO6 Refractory and Its Interaction with TiAl Alloy

Fuli Bian; Zheyu Cai; Jian Liu; Yu Liu; Man Zhang; Yixin Fu; Kailiang Zhu; Guangyao Chen; Chonghe Li

doi:10.3390/ma16237298

Preparation of Sr₂CeZrO₆ Refractory and Its Interaction with TiAl Alloy

Materials (Basel). 2023 Nov 23;16(23):7298. doi: 10.3390/ma16237298.

Authors

Fuli Bian¹, Zheyu Cai², Jian Liu², Yu Liu², Man Zhang², Yixin Fu², Kailiang Zhu¹, Guangyao Chen^{2

3

4}, Chonghe Li^{2

3

4}

Affiliations

¹ Fire Research Institute of Shanghai of MEM, Shanghai 200032, China.
² State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
³ Shanghai Special Casting Engineering Technology Research Center, Shanghai 201605, China.
⁴ Zhejiang Institute of Advanced Materials, Shanghai University, Jiaxing 314100, China.

Abstract

Vacuum induction melting in a refractory crucible is an economical method to produce TiAl-based alloys, aiming to reduce the preparation cost. In this paper, a Sr₂CeZrO₆ refractory was synthesized by a solid-state reaction method using SrCO₃, CeO₂ and ZrO₂ as raw materials, and its interaction with TiAl alloy melt was investigated. The results showed that a single-phase Sr₂CeZrO₆ refractory could be fabricated at 1400 °C for 12 h, and its space group was Pnma with a = 5.9742(3) Å, b = 8.3910(5) Å and c = 5.9069(5) Å. An interaction layer with a 40μm thickness and dense structure could be observed in Sr₂CeZrO₆ crucible after melting TiAl alloy. Additionally, the interaction mechanism showed that the Sr₂CeZrO₆ refractory dissolved in the alloy melt, resulting in the generation of Sr₃Zr₂O₇, SrAl₂O₄ and CeO_2-x, which attached to the surface of the crucible.

Keywords: Sr2CeZrO6; TiAl alloys; induction melting; interaction; refractory.

Grants and funding

This research was supported by Science and Technology plan projects of Fire Research Institute of Shanghai (No. 22SX34), National Natural Science Foundation of China (Nos. 52001297; 52104305).